Regular Expressions 101

All the errors detected are listed below, from left to right, as they appear in the pattern.

) Closing parenthesis is unmatched

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

\(\<th[^\>]*?\>|\<td[^\>]*?\>)(?:\r?\n)?([\s\S]*?)(?:\r?\n)?(\<\/\\1\>)

<table>
<tr>
  <th> test th </th>
</tr><tr>
  <td> test td </td>
</tr>
</table>